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Chiaverini L, Tolbatov I, Marrone A, Marzo T, Biver T, La Mendola D. Unveiling the mechanism of activation of the Te(IV) prodrug AS101. New chemical insights towards a better understanding of its medicinal properties. J Inorg Biochem 2024; 256:112567. [PMID: 38669911 DOI: 10.1016/j.jinorgbio.2024.112567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/04/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024]
Abstract
AS101 (Ammonium trichloro (dioxoethylene-O,O') tellurate) is an important hypervalent Te-based prodrug. Recently, we started a systematic investigation on AS101 with the aim to correlate its promising biological effects as a potent immunomodulator drug with multiple medicinal applications and its specific chemical properties. To date, a substantial agreement on the rapid conversion of the initial AS101 species into the corresponding TeOCl3- anion does exist, and this latter species is reputed as the pharmacologically active one. However, we realized that TeOCl3- could quickly undergo further steps of conversion in an aqueous medium, eventually producing the TeO2 species. Using a mixed experimental and theoretical investigation approach, we characterized the conversion process leading to TeO2 occurring both in pure water and in reference buffers at physiological-like pH. Our findings may offer a valuable "chemical tool" for a better description, interpretation -and optimization- of the mechanism of action of AS101 and Te-based compounds. This might be a starting point for improved AS101-based medicinal application.
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Affiliation(s)
- Lorenzo Chiaverini
- Department of Pharmacy, University of Pisa. Via Bonanno Pisano 6, 56126 Pisa, Italy
| | - Iogann Tolbatov
- Department of Physics and Astronomy, University of Padova, via F. Marzolo 8, 35131 Padova, Italy
| | - Alessandro Marrone
- Department of Pharmacy, Università degli Studi "G. D'Annunzio" Chieti-Pescara, Via dei Vestini, 66100 Chieti, Italy
| | - Tiziano Marzo
- Department of Pharmacy, University of Pisa. Via Bonanno Pisano 6, 56126 Pisa, Italy.
| | - Tarita Biver
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi, 13, 56124 Pisa, Italy
| | - Diego La Mendola
- Department of Pharmacy, University of Pisa. Via Bonanno Pisano 6, 56126 Pisa, Italy
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Chiaverini L, Marzo T, La Mendola D. AS101: An overview on a leading tellurium-based prodrug. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Chiaverini L, Cirri D, Tolbatov I, Corsi F, Piano I, Marrone A, Pratesi A, Marzo T, La Mendola D. Medicinal Hypervalent Tellurium Prodrugs Bearing Different Ligands: A Comparative Study of the Chemical Profiles of AS101 and Its Halido Replaced Analogues. Int J Mol Sci 2022; 23:ijms23147505. [PMID: 35886853 PMCID: PMC9317073 DOI: 10.3390/ijms23147505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 02/01/2023] Open
Abstract
Ammonium trichloro (dioxoethylene-O,O′) tellurate (AS101) is a potent immunomodulator prodrug that, in recent years, entered various clinical trials and was tested for a variety of potential therapeutic applications. It has been demonstrated that AS101 quickly activates in aqueous milieu, producing TeOCl3−, which likely represents the pharmacologically active species. Here we report on the study of the activation process of AS101 and of two its analogues. After the synthesis and characterization of AS101 and its derivatives, we have carried out a comparative study through a combined experimental and computational analysis. Based on the obtained results, we describe here, for the first time, the detailed reaction that AS101 and its bromido- and iodido-replaced analogues undergo in presence of water, allowing the conversion of the original molecule to the likely true pharmacophore. Interestingly, moving down in the halogens’ group we observed a higher tendency to react, attributable to the ligands’ effect. The chemical and mechanistic implications of these meaningful differences are discussed.
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Affiliation(s)
- Lorenzo Chiaverini
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano, 6, 56126 Pisa, Italy; (L.C.); (F.C.); (I.P.); (D.L.M.)
| | - Damiano Cirri
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi, 13, 56124 Pisa, Italy; (D.C.); (A.P.)
| | - Iogann Tolbatov
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, 43007 Tarragona, Spain
- Correspondence: (I.T.); (T.M.)
| | - Francesca Corsi
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano, 6, 56126 Pisa, Italy; (L.C.); (F.C.); (I.P.); (D.L.M.)
| | - Ilaria Piano
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano, 6, 56126 Pisa, Italy; (L.C.); (F.C.); (I.P.); (D.L.M.)
| | - Alessandro Marrone
- Dipartimento di Farmacia, Università degli Studi “G. D’Annunzio” Chieti-Pescara, Via dei Vestini, 66100 Chieti, Italy;
| | - Alessandro Pratesi
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi, 13, 56124 Pisa, Italy; (D.C.); (A.P.)
| | - Tiziano Marzo
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano, 6, 56126 Pisa, Italy; (L.C.); (F.C.); (I.P.); (D.L.M.)
- Correspondence: (I.T.); (T.M.)
| | - Diego La Mendola
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano, 6, 56126 Pisa, Italy; (L.C.); (F.C.); (I.P.); (D.L.M.)
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Maganhi SH, Caracelli I, Zukerman-Schpector J, Cunha RL, Veja-Teijido MA, Tiekink ER. Crystal structures and docking studies in cathepsin S of bioactive 1,3‐diphenyl‐4‐(trichloro‐λ4‐tellanyl)but‐2‐en‐1‐one derivatives. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Souza JPA, Menezes LRA, Garcia FP, Scariot DB, Bandeira PT, Bespalhok MB, Giese SOK, Hughes DL, Nakamura CV, Barison A, Oliveira ARM, Campos RB, Piovan L. Synthesis, Mechanism Elucidation and Biological Insights of Tellurium(IV)-Containing Heterocycles. Chemistry 2021; 27:14427-14437. [PMID: 34406689 DOI: 10.1002/chem.202102287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Indexed: 11/08/2022]
Abstract
Inspired by the synthetic and biological potential of organotellurium substances, a series of five- and six-membered ring organotelluranes containing a Te-O bond were synthesized and characterized. Theoretical calculations elucidated the mechanism for the oxidation-cyclization processes involved in the formation of the heterocycles, consistent with chlorine transfer to hydroxy telluride, followed by a cyclization step with simultaneous formation of the new Te-O bond and deprotonation of the OH group. Moreover, theoretical calculations also indicated anti-diastereoisomers to be major products for two chirality center-containing compounds. Antileishmanial assays against Leishmania amazonensis promastigotes disclosed 1,2λ4 -oxatellurane LQ50 (IC50 =4.1±1.0; SI=12), 1,2λ4 -oxatellurolane LQ04 (IC50 =7.0±1.3; SI=7) and 1,2λ4 -benzoxatellurole LQ56 (IC50 =5.7±0.3; SI=6) as more powerful and more selective compounds than the reference, being up to four times more active. A stability study supported by 125 Te NMR analyses showed that these heterocycles do not suffer structural modifications in aqueous-organic media or at temperatures up to 65 °C.
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Affiliation(s)
- João Pedro A Souza
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, PR, 81.931-480, Brazil
| | - Leociley R A Menezes
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, PR, 81.931-480, Brazil
| | - Francielle P Garcia
- Health Sciences Center, Universidade Estadual de Maringá, Maringá, PR, 87.020-900, Brazil
| | - Débora B Scariot
- Health Sciences Center, Universidade Estadual de Maringá, Maringá, PR, 87.020-900, Brazil
| | - Pamela T Bandeira
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, PR, 81.931-480, Brazil
| | - Mateus B Bespalhok
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, PR, 81.931-480, Brazil
| | - Siddhartha O K Giese
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, PR, 81.931-480, Brazil
| | - David L Hughes
- School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Celso V Nakamura
- Health Sciences Center, Universidade Estadual de Maringá, Maringá, PR, 87.020-900, Brazil
| | - Andersson Barison
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, PR, 81.931-480, Brazil
| | - Alfredo R M Oliveira
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, PR, 81.931-480, Brazil
| | - Renan B Campos
- Academic Department of Chemistry and Biology, Universidade Tecnológica Federal do Paraná, Curitiba, PR, 81.280-340, Brazil
| | - Leandro Piovan
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, PR, 81.931-480, Brazil
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D'Arcy K, Doyle AP, Kavanagh K, Ronconi L, Fresch B, Montagner D. Stability of antibacterial Te(IV) compounds: A combined experimental and computational study. J Inorg Biochem 2019; 198:110719. [PMID: 31174178 DOI: 10.1016/j.jinorgbio.2019.110719] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/07/2019] [Accepted: 05/13/2019] [Indexed: 11/28/2022]
Abstract
Inorganic Te(IV) compounds are important cysteine protease inhibitors and antimicrobial agents; AS-101 [ammonium trichloro (dioxoethylene-O,O')tellurate] is the first compound of a family with formula NH4[C2H4Cl3O2Te], where a Te(IV) centre is bound to a chelate ethylene glycol, and showed several protective therapeutic applications. This compound is lacking in stability performance and is subjected to hydrolysis reaction with displacement of the diol ligand. In this paper, we report the stability trend of a series of analogues complexes of AS-101 with generic formula NH4[(RC2H3O2)Cl3Te], where R is an alkyl group with different chain length and different electronic properties, in order to find a correlation between structure and stability in aqueous-physiological conditions. The stability was studied in solution via multinuclear NMR spectroscopy (1H, 13C, 125Te) and computationally at the Density Functional Theory level with an explicit micro solvation model. The combined experimental and theoretical work highlights the essential role of the solvating environment and provides mechanistic insights into the complex decomposition reaction. Antimicrobial activity of the compounds was assessed against different bacterial strains.
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Affiliation(s)
- Kenneth D'Arcy
- Department of Chemistry, Maynooth University, Maynooth, Ireland
| | | | - Kevin Kavanagh
- Department of Biology, Maynooth University, Maynooth, Ireland
| | - Luca Ronconi
- School of Chemistry, National University of Ireland Galway, Galway, Ireland
| | - Barbara Fresch
- Department of Chemical Science, University of Padova, Italy.
| | - Diego Montagner
- Department of Chemistry, Maynooth University, Maynooth, Ireland.
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7
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Teixeira ML, Menezes LRA, Barison A, de Oliveira ARM, Piovan L. Investigation of Chemical Stability of Dihalogenated Organotelluranes in Organic-Aqueous Media: The Protagonism of Water. J Org Chem 2018; 83:7341-7346. [PMID: 29373033 DOI: 10.1021/acs.joc.7b02971] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The biological activity of tellurium compounds is closely related to the tellurium oxidation state or some of their structural features. Hypervalent dihalogenated organotelluranes 1-[butyl(dichloro)-λ4-tellanyl]-2-(methoxymethyl)benzene (1a) and 1-[butyl(dibromide)-λ4-tellanyl]-2-(methoxymethyl)benzene (1b) have been described as inhibitors of proteases (cysteine and threonine) and tyrosine phosphatases. However, poor attention has been given to their physicochemical properties. Here, a detailed investigation of the stability in water of these organotelluranes is reported using 125Te NMR analysis. Dihalogenated organotelluranes 1a and 1b were both stable in DMSO- d6 (from 25 to 75 °C), demonstrating their thermal stability. However, the addition of a phosphate buffer solution (pH 2-8) to 1a or 1b resulted in an immediate conversion to a new Te species, assumed to be the corresponding telluroxide. Similar behavior was observed in pure water, demonstrating the low chemical stability of these dihalogenated species in the presence of water. These results allow concluding that previous biological activity reported for dihalogenated organotelluranes 1a and 1b could be attributed to the corresponding derivatives from the reaction with water. In the same way as for AS-101, we demonstrated that organotelluranes 1a and 1b are not stable in aqueous solution. It suggests a proactive role of these organotelluranes in previously reported biological activity.
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Affiliation(s)
- Mariana L Teixeira
- Department of Chemistry , Universidade Federal do Paraná , Avenida Coronel Francisco Heráclito dos Santos, 100 - Jardim das Américas , Curitiba , Paraná 81531980 , Brazil
| | - Leociley R A Menezes
- Department of Chemistry , Universidade Federal do Paraná , Avenida Coronel Francisco Heráclito dos Santos, 100 - Jardim das Américas , Curitiba , Paraná 81531980 , Brazil
| | - Andersson Barison
- Department of Chemistry , Universidade Federal do Paraná , Avenida Coronel Francisco Heráclito dos Santos, 100 - Jardim das Américas , Curitiba , Paraná 81531980 , Brazil
| | - Alfredo R M de Oliveira
- Department of Chemistry , Universidade Federal do Paraná , Avenida Coronel Francisco Heráclito dos Santos, 100 - Jardim das Américas , Curitiba , Paraná 81531980 , Brazil
| | - Leandro Piovan
- Department of Chemistry , Universidade Federal do Paraná , Avenida Coronel Francisco Heráclito dos Santos, 100 - Jardim das Américas , Curitiba , Paraná 81531980 , Brazil
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8
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Caracelli I, Maganhi SH, de Oliveira Cardoso J, Cunha RL, Vega-Teijido MA, Zukerman-Schpector J, Tiekink ER. Crystallographic and docking (Cathepsins B, K, L and S) studies on bioactive halotelluroxetanes. Z KRIST-CRYST MATER 2017. [DOI: 10.1515/zkri-2017-2079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The molecular structures of the halotelluroxetanes p-MeOC6H4Te(X)[C(=C(H)X′)C(CH2)nO], X=X′=Cl and n=6 (1) and X=Cl, X′=Br and n=5 (4), show similar binuclear aggregates sustained by {· · ·Te–O}2 cores comprising covalent Te–O and secondary Te· · ·O interactions. The resulting C2ClO2(lone-pair) sets define pseudo-octahedral geometries. In each structure, C–X· · ·π(arene) interactions lead to supramolecular layers. Literature studies have shown these and related compounds (i.e. 2: X=X′=Cl and n=5; 3: X=X′=Br and n=5) to inhibit Cathepsins B, K, L and S to varying extents. Molecular docking calculations have been conducted on ligands (i.e. cations derived by removal of the tellurium-bound X atoms) 1′–3′ (note 3′=4′) enabling correlations between affinity for sub-sites and inhibition. The common feature of all docked complexes was the formation of a Te–S covalent bond with cysteine residues, the relative stability of the ligands with an E-configuration and the formation of a C–O· · ·π interaction with the phenyl ring; for 1′ the Te–S covalent bond was weak, a result correlating with its low inhibition profile. At the next level differences are apparent, especially with respect to the interactions formed by the organic-ligand-bound halides. While these atoms do not form specific interactions in Cathepsins B and K, in Cathepsin L, these halides are involved in C–O· · ·X halogen bonds.
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Affiliation(s)
- Ignez Caracelli
- BioMat, Departamento de Física , Universidade Federal de São Carlos , C.P. 676 , São Carlos, SP, 13565-905 , Brazil
| | - Stella H. Maganhi
- BioMat, Programa de Pós-graduação em Biotecnologia , Universidade Federal de São Carlos , C.P. 676 , São Carlos, SP, 13565-905 , Brazil
| | - Josiane de Oliveira Cardoso
- BioMat, Departamento de Física , Universidade Federal de São Carlos , C.P. 676 , São Carlos, SP, 13565-905 , Brazil
| | - Rodrigo L.O.R. Cunha
- Center of Natural Sciences and Humanities, Federal University of ABC , Santo André, São Paulo 09210-180 , Brazil
| | - Mauricio Angel Vega-Teijido
- Laboratório de Cristalografia, Estereodinâmica e Modelagem Molecular , Departamento de Química , Universidade Federal de São Carlos , C.P. 676 , São Carlos, SP, 13565-905 , Brazil
| | - Julio Zukerman-Schpector
- Laboratório de Cristalografia, Estereodinâmica e Modelagem Molecular , Departamento de Química , Universidade Federal de São Carlos , C.P. 676 , São Carlos, SP, 13565-905 , Brazil
| | - Edward R.T. Tiekink
- Research Centre for Crystalline Materials, School of Science and Technology , Sunway University , 47500 Bandar Sunway , Selangor Darul Ehsan , Malaysia
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Princival C, Archilha MVLR, Dos Santos AA, Franco M, Braga AAC, Rodrigues-Oliveira AF, Correra TC, Cunha RLOR, Comasseto JV. Stability Study of Hypervalent Tellurium Compounds in Aqueous Solutions. ACS OMEGA 2017; 2:4431-4439. [PMID: 31457735 PMCID: PMC6641895 DOI: 10.1021/acsomega.7b00628] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 07/19/2017] [Indexed: 06/10/2023]
Abstract
Hypervalent tellurium compounds (telluranes) are promising therapeutical agents with negligible toxicities for some diseases in animal models. The C-Te bond of organotellurium compounds is commonly considered unstable, disfavoring their applicability in biological studies. In this study, the stability of a set of telluranes composed of an inorganic derivative and noncharged and charged organic derivatives was monitored in aqueous media with 1H, 13C, and 125Te NMR spectroscopy and high-resolution mass spectrometry. Organic telluranes were found to be remarkably resistant and stable to hydrolysis, whereas the inorganic tellurane AS101 is totally converted to the hydrolysis product, trichlorooxytellurate, [TeOCl 3 ]-, which was also observed in the hydrolysis of TeCl 4 . The noteworthy stability of organotelluranes in aqueous media makes them prone to further structure-activity relationship studies and to be considered for broad biological investigations.
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Affiliation(s)
| | | | | | - Maurício
P. Franco
- Instituto
de Química, Universidade de São
Paulo, São
Paulo, SP 05508-020, Brazil
| | - Ataualpa A. C. Braga
- Instituto
de Química, Universidade de São
Paulo, São
Paulo, SP 05508-020, Brazil
| | | | - Thiago C. Correra
- Instituto
de Química, Universidade de São
Paulo, São
Paulo, SP 05508-020, Brazil
| | - Rodrigo L. O. R. Cunha
- Centro
de Ciências Naturais e Humanas, Universidade
Federal do ABC, Santo André, SP 09210-580, Brazil
| | - João V. Comasseto
- Instituto
de Química, Universidade de São
Paulo, São
Paulo, SP 05508-020, Brazil
- Instituto
de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, SP 04021-001, Brazil
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